Description: Its a polar, 4axis, cantivileerian 3d printer! It uses a unorthodox aproach to rotate the hotend in b axis, and y axis, using only 2 motors and being pretty cool! The printbed is also backlit!! :3 WHy? idk, felt like it tbh. Saw a cool video on yt, thought: i wanna do that. And then highway happened. And then this happened.
Power Supply (LRS-350-24) Connections
LRS-350-24:
AC Input L (Live): → Mains AC Hot
AC Input N (Neutral): → Mains AC Neutral
AC Input Ground: → Mains AC Ground
+V (24V): → SKR3 VIN terminal
-V (Ground): → SKR3 GND terminal
+V (24V): → LED Strip positive terminal
-V (Ground): → LED Strip negative terminal
SKR3 Main Board Connections Stepper Motor Drivers
SKR3:
Driver Socket X: → X-axis stepper driver (TMC2209/TMC2226)
Driver Socket Y: → Y-axis stepper driver (TMC2209/TMC2226)
Driver Socket Z: → Z-axis stepper driver (TMC2209/TMC2226)
Driver Socket E0: → Extruder stepper driver (TMC2209/TMC2226)
Endstop Switches
SKR3:
X-STOP pin 1 (Signal): → X endstop switch NO (Normally Open)
X-STOP pin 2 (GND): → X endstop switch COM (Common)
Y-STOP pin 1 (Signal): → Y endstop switch NO (Normally Open)
Y-STOP pin 2 (GND): → Y endstop switch COM (Common)
Z-STOP pin 1 (Signal): → Z endstop switch NO (Normally Open)
Z-STOP pin 2 (GND): → Z endstop switch COM (Common)
Hotend (XC1) Connections
SKR3:
HE0 pin 1 (+): → XC1 hotend heater cartridge positive
HE0 pin 2 (-): → XC1 hotend heater cartridge negative
TH0 pin 1 (Signal): → B57560G1104F000 thermistor pin 1
TH0 pin 2 (GND): → B57560G1104F000 thermistor pin 2
FAN0 pin 1 (+): → XC1 cooling fan positive (24V)
FAN0 pin 2 (-): → XC1 cooling fan negative
Print Bed Connections
SKR3:
HE1/BED pin 1 (+): → Print bed heater positive
HE1/BED pin 2 (-): → Print bed heater negative
THB pin 1 (Signal): → Bed thermistor positive (if separate)
THB pin 2 (GND): → Bed thermistor negative (if separate)
LED Strip Connections
SKR3:
FAN1 pin 1 (+): → LED strip positive (via MOSFET if needed)
FAN1 pin 2 (-): → LED strip negative
| Part | Qty | total$ | link |
|---|---|---|---|
| sherpa mini | 1 | 24 | Ali |
| vslot rail | 2 | 16 | Ali |
| nema17+screw | 2 | 20 | Ali |
| nema17 | 3 | 15 | Ali |
| skr3+drivers | 1 | 77 | Ali |
| lrs-350-24 | 1 | 35 | Ali |
| pillow-bearing | 2 | 12 | Ali |
| pulley | 2 | 3 | Ali |
| pulley no-teeth | 4 | 12 | Ali |
| back-pulley-xaxis | 1 | 2 | Ali |
| big-xaxis-pulley | 1 | 5 | Ali |
| bearing-uni | 4 | 5 | Ali |
| gantry_vslot | 2 | 18 | Ali |
| 4010 fan | 1 | 4 | Ali |
| sliding rod | 1 | 3.2 | ali |
| lm8uu bearing | 2 | 3 | ali |
| m4 screws+nuts | 36 | 8 | local_shop |
| m3 screws+nuts | 25 | 8 | local_shop |
| m2 wcrews+nutss | 4 | 1 | local_shop |
| m2.5 screw | 2 | 1 | local_shop |
| m5 screws+nuts | 35 | 4 | local_shop |
| m8 screws+nuts | 5 | 4 | local_shop |
| B57560G1104F000 thermistor | 2 | 8 | mouser |
| leds4printbed | 75 | 15 | piekarz🔥 |
| gt2 belt | 1 | 8 | Ali |
| nutblock | 2 | 6 | Ali |
| xc1 hotend | 1 | 2 | Ali |
| jumper cables (m2m & f2f & m2f) | 40 each | 8 | Botland note: after customs aliexpress is actually more expensive + m2m and f2f connectors cost the same - ~2.5$) |
| endstop switches | 3 | 4 | ali |
| pcb | 1 | 20 | jlcpcb |
holy fuck its actually exactly 350$ wtf nicee i though i was gonna pay from pocket